What is an umbilical hernia? An umbilical hernia is a bulge through the abdominal muscles in the area of the navel (belly button). The hernia may contain tissue from the abdomen, part of an organ (such as the intestine), or fluid.
Iliac crest contusion occurs due to bleeding of abdominal muscles and swelling. This can cause excruciating pain when the person tries to move his hip region. Bleeding can occur on the periosteum region of the bone resulting in inflammation and the muscles of the iliac crest would develop spasms.
Dull Abdominal Pain. An iliac aneurysm may cause symptoms such as lower abdominal pain, according to the University of Chicago. You may also feel pain in the lower back or in the groin. This pain may be felt as dull and throbbing. The pain may appear, then disappear.